The closest thing I can think of to this was: http://en.wikipedia.org/wiki/Singularity_%28operating_system%29 http://en.wikipedia.org/wiki/Singularity_%28opera

The closest thing I can think of to this was: http://en.wikipedia.org/wiki/Singularity_%28operating_system%29 http://en.wikipedia.org/wiki/Singularity_%28operating_system... Which was a complete re-design at almost every level. Unfortunately the entire project got shelved, but it was a pretty interesting experiment while it lasted...